from django import forms
from django.core.exceptions import ValidationError
from web import models
from web.forms.bootstrap import BootStrapForm
from Utils.tencent.cos import check_file


class FolderModelForm(BootStrapForm, forms.ModelForm):
    class Meta:
        model = models.FileRepository
        fields = ['name', ]

    def __init__(self, request, parent_object, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.request = request
        self.parent_object = parent_object

    def clean_name(self):
        name = self.cleaned_data['name']
        # 数据库判断当前目录下 此文件是否已存在
        queryset = models.FileRepository.objects.filter(file_type=2, name=name, project_id=self.request.tracer.project.id,
                                             parent=self.parent_object)
        if self.parent_object:
            exists=queryset.filter(parent=self.parent_object)
        else:
            exists=queryset.filter(parent__isnull=True)
        if exists:
            raise ValidationError("此文件夹已存在")
        return name


class FileModelForm(forms.ModelForm):
    etag = forms.CharField(label="ETag",)
    class Meta:
        model = models.FileRepository
        exclude = ['project', 'file_type', 'update_user', 'update_datetime']


    def __init__(self, request, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.request = request

    def clean_file_path(self):

        return "https://{}".format(self.cleaned_data['file_path'])
"""
    def clean(self):
        key = self.cleaned_data['key']
        etag = self.cleaned_data['etag']
        size = self.cleaned_data['size']
        if not key or not etag:
            return self.cleaned_data
        #  向 COS  校验文件是否合法
        #  SDK的功能
        from qcloud_cos.cos_exception import CosServiceError
        try:
            result = check_file(self.request.tracer.project.bucket, self.request.tracer.project.region, key)
        except CosServiceError as e:
            self.add_error("key",'文件不存在')
            return self.cleaned_data
        cos_etag = result.get('ETag')
        if etag != cos_etag:
            self.add_error('etag', 'ETag错误')
        cos_length = result.get('Content_Length')
        if int(cos_length) != size:
            self.add_error('size', '文件大小错误')
        return self.cleaned_data        
"""




